Win 8.1 - Screen Brightness Went Up And Can't Control It

Jun 20, 2014

When I upgraded to win 8.1 my screen brightness went up and i can't control it. i tried re-installing the graphic drivers but it's not working. Also my battery backup has decreased from 3.5 hrs to 2 hrs only. What do i Do?

I bought Dell 5521 2weeks ago (8gb ram 1tb hdd i5 1.70ghz). Whatever, now, i can't use my FN+F4/F5 keys. I can't control/change my screen brightness. Other Fn keys are normal. I can use them but just i can't use my brightness. What should i do? A person said me that "download the Fn key's driver" but i don't know which driver is.

Since updating my HP Pavillion 64 bit to Windows 8.1, I have been unable to use an HDMI cable or reduce the computer brightness. I figured it would be a simple fix: restore to before the update, and wait for the bugs to be worked out. However, every time I attempt to access the control panel to perform a system restore, the entire OS freezes. Update: I tried to power on my computer just now to no avail. Stayed on the HP loading screen for 30 min.

IS there any tool, which will enable me to controll the brightness with some re-assigned short keys ?? I have a Sony Vaio Laptop but the thing is that the utility for my laptop which is responsible for Brightness control is not comparable with Windows 8, so I am searching for some tool/software which will control my screen brightness.

I have tried to change my screen brightness for the first time since downloading windows 8.1(about a month ago) and it is stuck a the lowest level. I have used the keys, the settings, and even the "Adjust screen brightness" button after clicking on the battery in bottom right of screen. I looked at my drivers and checked if my "Display adapters" needed to be updated, it didn't.

i have a smal probleem with My new Acer tablet. The brightness of the screen randomly changes. i did some googling and i learned the tablet is able to auto adjust the beightness. I found a sensor on My tablet and did some testing by shining on it with a pocket torch and saw with more light the brightness increased. How i want it off. I Tried switching off the adaptive settings bit it didn' t work..

So, a few days ago the battery of my laptop died and when I charged it and power it up again I found that I can't change the brightness of my screen which I was able to few minutes before. I tried fixing it by going onto control panel>hardware and sound>power option, but it didn't work. It's just stuck. What can I do? Is my laptop broken?

I just yesterday finished my new computer (16Gb RAM, i5-4470k, GTX 770, Win 8.1, etc.) and I just today realized that I cannot change the screen brightness. The button is grayed out and says "Unavailable" which I know cannot be possible.

Now, i have done my research and people say that the fix is to update your drivers through the Device Manager, and I have tried that to no avail. I have tried all possible combinations of "Display Adapters" and "Monitors" drivers. None work. I have been restarting my computer after every change .

One thing that I might add is that a lot of people remedy this problem by reverting their Intel Integrated drives back to an older version, but I do not have an option to change it's drivers. It shows up nowhere in the Device manager.

My eyes are burning as I am typing this and I would even go for a third-party brightness program (if that even exists).

I have a new computer , HP recline 23 . OS is Windows 8.1 . It came out of the box with Windows 8 , so I had MS store update to 8.1. The screen is set very bright , OK for day use but too bright for night use .

My problem is that I can't adjust the screen brightness. After clicking on the charms menu and clicking on settings , the brightness icon is greyed out . It says windows cannot adjust brightness on this computer. I tried the various locations where the brightness slider may be but all the relevant screens show no brightness slider.

I don't know whether win 8 had the brightness control before upgrading to 8.1 ( I mention this because several people complain that after upgrading to 8.1 , they loss brightness control amd regained it by rolling back the driver )

I tried the update driver option but it says my driver is already updated. The roll back option is greyed out ...

BTW the display adapter shows two adapters : Intel 4600 and Gforce GT730 . How do I check which one is being used?

Well I've had my laptop for almost 5 months now, however I did break it and got a screen replacement yesterday. Ever since then my screen seems dim. I've altered all the settings (as explained on other threads) but I still can't get to the centre of the problem. I had no trouble altering my brightness before my screen replacement so I do presume that the screen that the shop fitted wasn't the correct one and therefore a cheap option.

I went and bought a new laptop since my old one was starting to die on me and stuff. It's a Samsung ATIV Book 4, and it's really nice. This is the first hick up I've had with it so far, and I noticed it happening today. I noticed my screen was really dim today as I was using it, so naturally, I use the Fn key to turn it up, but nothing happens. Up in the top left of the screen, it shows a little brightness meter going up and down as I turn it up and down, but nothing changes. I went to the power options menu and tried to adjust it there, and alas, nothing happened. I even tried disabling the display driver and restarting it, but that didn't do anything.

I just reset my PC. I was installing things back onto it (firefox, Spotify etc) and all of the sudden the screen went dim. I went to settings and it says "Windows can't adjust the brightness on this display" . Restarting the computer does nothing.

I have a Windows 8.1 Toshiba Satellite L875D-S7332, with a AMD A6-4400M APU processor with integrated graphics. My display adapter, according to device manager, is a AMD Radeon HD 7520G.

Now, my problem is that I'm unable to adjust the screen brightness of my laptop. I haven't made any recent changes, and I noticed this about a week or so ago(I don't typically change my laptop brightness, so this could have been happening for longer). In the mean time, I've tried rolling back my display drivers, with no success, and also updating to the latest driver set, which has also not worked?

I have a HP envy m6 notebook and when im viewing websites the brightness will keep randomly changing. Why is this and how do I stop it? I've gone into the settings and turned off the 'enable adaptive brightness' but it still seems to keep happening.

I have Lenovo G580 running 8.1 with intel HD4000 and Nvidia Geforce 610 & Intel CoreI5 3210 2.5GHZ 3rd generationthe problem occurs after few days from updating the Intel video card which is simply i can't change the screen brightness whether using the [function+uparrow ] or control panel, it works well when i roll back the driver so am I stuck with the old driver which i can't update or what?

The other day my son stepped on my laptop and messed up the screen. Now when it starts up I get red lines going across the screen, but can still see the bios info and the windows logo and spinning dots when Windows loads just fine, however when Windows starts I just have a blank screen. Obviously the screen was damaged, but it seems to display the lower resolution okay. I just can't lower the resolution in Windows since I can't see what I'm doing. Plugging in an external monitor doesn't work, there's no output there. Is there way to change the resolution settings if I take it the hdd and plug it into another computer as an external drive? The laptop is an Intel cpu and my other machine is an AMD cpu, so I don't think just trying to boot the laptop hard drive in the desktop would work.

I have an asus laptop and i have a problem with increase and decreasing level of brightness.

my operating system is windows 8.1 and i download and installed latest version of driver that is compatible with my OS. when i early installed windows, i installed drivers and don't have problem with it. but now after months suddenly it happened to me.

i can see OSD that changing brightness, but i don't actually see any change

what the registry key (or other option) was for the incremental brightness steps.

I am trying to figure out if I can lower the amount that my brightness changes in each "step" or click of the brightness function key. I know for a fact my display supports changing the brightness in smaller increments (You can do it with the slider in the battery settings) I just need to figure out how to change the amount that Windows increments/decrements per key-press.

I've installed windows 8 and I was able to change the screen brightness without any issues. After installing windows 8.1 however, I wasn't able to change the screen brightness. I was only able to change it when using the standard windows graphics driver, but when using the AMD driver it won't work.

When in settings the "brightness icon" is not working, when clicking the mouse over the icon, the following message appears: (windows can't adjust the brightness on this display) Before it was working just fine.

Obviously there is no doubt that the n150+ or any Samsung note/netbook have had problems with not being able to control their devices brightness on Windows 7. This is because any driver after the OEM driver would change a particular number in the registry(regedit)

There were two fixes to this problem in WIndows 7. The simple way was to install the original VGA driver. The other was to change a specific number to 84 in the registries.

I have tried both and still can't adjust brightness with the fn keys. I've installed Easy Display Manager which is the software required to use fn key functions. Sound works automatically with or without the software.

I've noticed that whenever I unplug my charger my brightness dims down to a point where I know its on, but I can't use it. Usually I have to put my computer to sleep and turn it back on to get it to fix. Also, the brightness wont adjust in anyway when its on. I've tried the function keys and the setting in the side bar. I have a toshiba laptop running windows 8.1 . I also have recently completely wiped it thinking it was a virus of some sorta with no change.

brightness goes to minimum as soon as i start my system and then i can't increase it using any settings . I can increase it sometimes using keyboard , but that is temporary . Also whether it is plugged in or not , that thing doesn't change the problem.